Hyundai Engines - Auto Repair Codes

Scan Tool for Codes and Live Data for your Hyundai Engine from $199 USD

The information below may apply to Hyundai Excel, Coupe (including S Coupe) and many other models

Step 5

Hyundai EFI Code Reading

Connector Diagram

Auto Repair Manual - How to read codes (No Special Tools Needed)

NOTE:For this system to work the vehicle must have a Check Engine Light (CEL).

1 If possible run the engine to bring the oxygen sensor up to operating temperature then switch the engine off.

2 Turn the ignition ON. If the Check Engine Light (CEL) does not go out within 3 seconds there is a fault code present.

3 Ground terminal as shown in diagram for 2.5 to 7 seconds.

4 IMPORTANTOne code will be played continuously, to display another code you will need to re-link terminals as explained above.

5 Read codes as described in the Code Format Description below.

6 Press the continue button to enter the code numbers and get the code description.

Code Format Diagram

Code Format Description

• A long flash indicates the start of the code sequence.

• The code is made up of four groups of flashes each representing a digit.

• A long pause separates each code sequence.

• Shorter pauses separate each group of flashes

• Code Format Diagram shows code No. 1231.

To move to the next screen click on the Continue button

 Continue > 

Note on Example Model(s): Hyundai Excel, Coupe (including S Coupe)
The example model(s) shown, Hyundai Excel, Coupe (including S Coupe) for this auto repair service are only an indication to help you. There may be many other models that apply to this connector. Click above link to see the complete vehicle coverage list.